312452513 has 6 divisors (see below), whose sum is σ = 320260902. Its totient is φ = 304830080.

The previous prime is 312452509. The next prime is 312452521. The reversal of 312452513 is 315254213.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1882384 + 310570129 = 1372^2 + 17623^2 .

It is not a de Polignac number, because 312452513 - 2² = 312452509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (312452113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91256 + ... + 94617.

It is an arithmetic number, because the mean of its divisors is an integer number (53376817).

Almost surely, 2^312452513 is an apocalyptic number.

It is an amenable number.

312452513 is a deficient number, since it is larger than the sum of its proper divisors (7808389).

312452513 is an equidigital number, since it uses as much as digits as its factorization.

312452513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185955 (or 185914 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 312452513 is about 17676.3263434459. The cubic root of 312452513 is about 678.5700291943.

The spelling of 312452513 in words is "three hundred twelve million, four hundred fifty-two thousand, five hundred thirteen".